libqt5network5 5.7.1+dfsg-2ubuntu4~1.17.04.1 (i386 binary) in ubuntu zesty

 Qt is a cross-platform C++ application framework. Qt's primary feature
 is its rich set of widgets that provide standard GUI functionality.
 .
 The QtNetwork module offers classes that allow you to write TCP/IP clients and
 servers. It provides classes to make network programming easier and portable.